①6+ (4-7)
©
( 3+ 8) + (10-1)
20
9+(-2-8)
(10 (6 - 7) + (-11 + 2)
3 -12 + (-1 +5)
(11) (5--4) + (-5 - 4)
15
4-3-(3-10)
(12) (-2+ +6) + (20 +-18)
6 (2 + 15) --4
(13) (-7- 1) – (3 + 7)
6 (-5--1) + -8
14) (-11 + 6) - (9-10)
© (9 - 16) + 2
(15) (6 +-8) - (-3-4)
(4 + -7) – -12
(16) (1 --99) – (-1 +99)

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